Dissociative amnesia is a loss of personal memory caused by a severe psychological trauma. Because the amnesia does not result from physiological trauma, such as a brain injury or disease, it is often treated with psychological therapy. While dissociative amnesia is often associated with particular events or periods of time, in its most radical form there is a total abandonment of personal identity and memory. How was "truth serum" used to treat dissociative amnesia during World War II?More...

Colt did not invent the revolver, but his design was the first practical, working version of one, and he developed assembly-line techniques that drove down manufacturing costs. Even so, securing funding for his novel production system proved difficult, and his fledgling company struggled and eventually folded. He then turned to work on underwater mines and telegraph lines. In 1847, Colt reestablished his gun manufacturing business after what famous lawman placed an order for 1,000 revolvers?More...

Riggs began playing tennis at the age of 11, won Wimbledon when he was 21, and became one of the top-rated male tennis players of the 1940s. He retired in the early 1950s and was largely forgotten until 1973, when he proclaimed men superior to women in athletics and came out of retirement to challenge two of the top female tennis players in the world. After beating Margaret Court, he played Billie Jean King in one of the most famous tennis events of all time, "The Battle of the Sexes." Who won?More...

Quotation of the Day

The new and terrible dangers which man has created can only be controlled by man.

The "Birkie" started in 1973 as a cross-country ski race from Hayward, Wisconsin, to the neighboring town of Cable, with only 35 skiers competing. Now it is the largest and most prestigious cross-country ski race in North America and attracts top skiers from all over the world. Other races held during the three-day festival include the Barnebirkie (for children) and the 10K Family Fun Ski. The American Birkebeiner is part of the Worldloppet, an international series of marathon races, and was patterned after the Birkebeiner Rennet in Lillehammer, Norway. More...

Scientists have been blown away by Pluto's complex geology in the months following NASA's historic flyby of the dwarf planet. But it's not the only interesting world in its system: Charon, Pluto's largest moon, has proved surprising as well. According ...More...

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